PSLE Zane, Owen and Billy had 270 stickers altogether. Zane gave
110 of his stickers to Owen and
25 of his stickers to Billy. After that, all three boys had the same number of stickers. What was the difference in the number of stickers between Owen and Billy at first?
|
Zane |
Owen |
Billy |
Total |
Before |
10 u |
4 u |
1 u |
15 u |
Change 1 |
- 1 u |
+ 1 u |
|
|
Change 2 |
- 4 u |
|
+ 4 u |
|
After |
5 u |
5 u |
5 u |
15 u |
Comparing between Zane, Owen and Billy in the end |
1x5 = 5 u |
1x5 = 5 u |
1x5 = 5 u |
3x5 = 15 u |
Fraction of stickers that Zane had left
= 1 -
110 -
25 = 1 -
110 -
410 =
510 Total number of stickers
= 3 x 5 u
= 15 u
15 u = 270
1 u = 270 ÷ 15 = 18
Difference in the number of stickers between Owen and Billy at first
= 4 u - 1 u
= 3 u
= 3 x 18
= 54
Answer(s): 54